Quick-sealing closure for refrigerating devices



Nov. 24 1925 T. B. SLATE QUICK SEALING CLOSURE FOR REFRIGEBATING DEVICES'Origifial Filed Jan. 10, 1924 Patented Nov- 24, 19250 UNITED STATESPATENT OFFICE.

THOMAS SLATE, OF NEW YORK, N. Y.

on inalapplication filed January 10, 1924, Serial No. 685,482. Dividedand this application filed April 10, 1924. Serial no. 705,595.

To all whom itm/ay concern:

Be it known that l, THOMAS E. SLATE, a

citizen of the United States, residing at New I York, in the county ofNew York and State of New York, have invented a new and usefulQuick-Sealing Closure for Refrigerating Devices, of which the followingis a speciiication.

This application is a division of my allowed application, Serial No.685,482, filed January 10, 1924, now Patent Number 1,511,306, grantedOctober 14, 1924.

My object is to provide a novel quick sealing closure which can bequickly applied to and removed from a container to permit formation andremoval of a cake of carbon dioxide snow; and to provide means foreffecting an automatic seal of such a container against high pressureexerted from within on the clo'surewhile said cage of snow is beingformed within the container. attain the objects of my'invention by thedevice illustrated in the accompanying drawings, in which- Figure 1 is avertical section through my invention, the container being shown partlyin elevation; I

Fig. 2 is a detail perspective view of the lower end of the refrigeratorshell or container 8;

Fig. 3 is a detail perspective View of detachable flange ring 10;

Fig. 4 is a detail side elevation of removable end wall 12; and

Fig. 5 is a detail sectional view of resilient ring 13. Like charactersof reference designate'like parts in each of the several views.

Referring to the accompanying drawings, provide a suitable refrigeratorshell or container 8 for liquid carbon dioxide under high pressure, thenumeral 14 designating the carbon dioxide snow, which as described insaid application is in the form of a more or less porous cake. Thebottom of the container 8 is a closure plug 12, supported byquick-detachable flange collar 10 and interposed resilient ring 13.Flange collar 10 and shell or container 8 are threaded in a similarmanner, preferably at spaced portions, permitting ofquick application orremoval of the flange ring 10 and closure 12. Pressure from within thecontainer on closure 12 and thus on the interposed resilient ring 13causes the latter to automatically effect a tight seal of the container.

It will be noted that the container 8 is of approximately uniformcross-section and that the removable bottom closure fits the lower endthereof loosely so that its removal leaves the bottom open to themaximum cross-section of the cake 14, affording a free exit for theentire cake. By'having the bottom closure in the form of a piston-likehead with a cylindrical downward extension fitting the flange collaropening as shown, and by having the resilient ring 13 substantlally theproper diameter to loosely fit the lnterspace, it will be evident thatwhen great downward pressure is applied the radial inward and outwardexpansion of material of the ring seals the joint radially of thecontainer in addition to the seal aflorded by the direct squeezing ofthe ring by pressure taking efl'ect lengthwise of the container.

Whenever desired, the flange ring 10 may be easily turned to the leftuntil the threaded portions 11 of the flange'ring and containerdisengage each other through the vacant spaces and the flange ring isreadily and quickly slipped off, allowing the contents of container 8 tofall into any convenient receptacle. The bottom closure is then replacedby pushing it back to position and turning it to the right until thethreaded portions 11 properly engage each other.

What I claim is:

1. In apparatus of the class described, a container for cake material ofuniform cross-section open at one end thereof, said container having itsopen end provided with I spaced threaded portions, a flange ring havingcorresponding spaced threaded portions adapted for quick removal andreplacement on the open end of the said c0ntainer,a closure having anarea substantially equal to the maximum cross-section of the containerand slidably seated within the open end of said container, and an.elastic ring interposed between the closure and the inturned flange ofthe flange collar to effect an air-tight joint when pressure is exertedon the closure from within the container.

2. In apparatus of the class described, a container for cake material ofuniform crosssection open at one end thereof, said con tainer having itsopen end provided with of the flange collar to effect an air-tight jointwhen pressure is exerted on the closure from Within the container, saidclosure being formed with a reduced cylindrical extension approximatelyfitting and extending through the opening afforded by the flange collarand said elastic ring being of proper crosssection to spread and sealthe joint radially as Well as lengthwise of the container.

THOMAS B. SLATE.

